IDIC

IDIC (CAS number 1883441-92-6) has a A-D-A type of structure with an electron rich indaceno[1,2-b:5,6-b']dithiophene (IDT) centre and two electron deficient (3-oxo-2,3-dihydro-1H-indene-2,1-diylidene)dimalononitrile peripheral end groups. IDIC shows strong absorption in 500–800 nm with extinction coefficient of up to 2.4 × 10⁵ M^–1 cm^–1 and high electron mobility of 1.1 × 10^–3 cm² V^–1 s^–1.

As-cast non-fullerene polymer solar cells based on PBDB-T1 and IC-C6IDT-IC (IDIC) without additional treatments exhibit power conversion efficiencies of up to 8.71%. Also as-cast ternary organic solar cells based on polymer donor PM6 and IDIC:TOBDT as binary compatible non-fullerene acceptors achieved a PCE of 14%.

Device structure: ITO/PEDOT:PSS/PM6:IDIC:TOBDT/Bis-C60/Al

Chemical Structure

Literature and Reviews

1. A Facile Planar Fused-Ring Electron Acceptor for As-Cast Polymer Solar Cells with 8.71% Efficiency, Y. Lin et al., J. Am. Chem. Soc., 138, 9, 2973–2976 (2016); DOI: 10.1021/jacs.6b00853.
2. As-Cast Ternary Organic Solar Cells Based on an Asymmetric Side-Chains Featured Acceptor with Reduced Voltage Loss and 14.0% Efficiency, X. Chen et al., Adv. Funct. Mater., 30 (11), 1909535 (2019); DOI: 10.1002/adfm.201909535.
3. Two compatible nonfullerene acceptors with similar structures as alloy for efficient ternary polymer solar cells, W. Su et al., Nano Energy 38, 510–517 (2017); DOI: 10.1016/j.nanoen.2017.05.060.
4. Medium-Bandgap Small-Molecule Donors Compatible with Both Fullerene and Nonfullerene Acceptors, Y. Huo et al., ACS Appl. Mater. Interfaces, 10, 11, 9587–9594 (2018); DOI: 10.1021/acsami.7b17961.
5. Nonfullerene acceptors comprising a naphthalene core for high efficiency organic solar cells, RSC Adv., 9, 39163-39169 (2019); DOI: 10.1039/C9RA08092A.